Since: Version 20220807-113146-c2fee766
The functionality described in this section requires version 20220807-113146-c2fee766 of wezterm, or a more recent version.
Returns whether the alternate screen is active for the pane.
The alternate screen is a secondary screen that is activated by certain escape codes. The alternate screen has no scrollback, which makes it ideal for a "full-screen" terminal program like
less to do whatever they want on the screen without fear of destroying the user's scrollback. Those programs emit escape codes to return to the normal screen when they exit.